Method overriding not working in java

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Java

Hi all,

I have created below shown classes in java but my method overriding is not working:

package day3.inheritance;

//base class or parent class or super class
public class Box {
	public void calculateArea(int length, int width) {
		System.out.println("Area is: " + (length*width));
	}
}


============================================

package day3.inheritance;

//Inheritance: when a class acquires properties of another class
//subclass
public class NewBox extends Box {
	public void calculateVolume(int length, int width, int height) {
		System.out.println("Volume= " + (length*width*height));
	}
	
	public void calulateArea(int length, int width) {
		System.out.println("Sub area = " + (length / width));
	}
}

==================================================================

package day3.inheritance;

public class TestBox {
	public static void main(String[] args) {
		Box FedEx = new Box();
		FedEx.calculateArea(3, 4);
		
		NewBox ups = new NewBox();
		ups.calculateVolume(4, 5, 6);
		ups.calculateArea(4, 2);
	}

}

What I have tried:

Output is coming as below:

12
120
8

it should be
12
120
2

I was practicing from a video tutorial he wrote the same code. His code worked but not mine, Please help.